3. 容器备份与迁移



[root@VM_0_3_centos ~]# docker ps -a // 查看本地的容器
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS                      PORTS                    NAMES
dc92bf4f2dab        redis:latest        "docker-entrypoint..."   49 minutes ago      Exited (0) 40 minutes ago                            myredis
f9941aca500b        nginx:latest        "nginx -g 'daemon ..."   15 hours ago        Exited (0) 4 seconds ago                             nginx
a8168338d283        tomcat:7-jre8       "catalina.sh run"        15 hours ago        Up About an hour            0.0.0.0:8080->8080/tcp   tomcat
750f40204378        centos:latest       "/bin/bash"              4 days ago          Exited (137) 14 hours ago                            mycentos
[root@VM_0_3_centos ~]# docker images // 查看本地的镜像
REPOSITORY            TAG                 IMAGE ID            CREATED             SIZE
docker.io/centos      latest              75835a67d134        8 days ago          200 MB
docker.io/nginx       latest              be1f31be9a87        2 weeks ago         109 MB
docker.io/redis       latest              0a153379a539        2 weeks ago         83.4 MB
docker.io/solr        latest              45749c8baa2a        2 weeks ago         834 MB
docker.io/tomcat      7-jre8              82af61923130        3 weeks ago         463 MB
docker.io/zookeeper   latest              89f7884dcc4e        3 weeks ago         148 MB
docker.io/mysql       5.6                 1f47fade220d        6 weeks ago         256 MB
【 1. 容器保存为镜像   把nginx容器备份为wuleinginx镜像 】
[root@VM_0_3_centos ~]# docker commit nginx wuleinginx
sha256:7856283560cbb2f04afff3a619b1ce52d212dad41b3c3aa0e4471ab7382bb674
[root@VM_0_3_centos ~]# docker images // 可以看到我们新建的镜像成功了
REPOSITORY            TAG                 IMAGE ID            CREATED             SIZE
wuleinginx            latest              7856283560cb        9 seconds ago       109 MB
docker.io/centos      latest              75835a67d134        8 days ago          200 MB
docker.io/nginx       latest              be1f31be9a87        2 weeks ago         109 MB
docker.io/redis       latest              0a153379a539        2 weeks ago         83.4 MB
docker.io/solr        latest              45749c8baa2a        2 weeks ago         834 MB
docker.io/tomcat      7-jre8              82af61923130        3 weeks ago         463 MB
docker.io/zookeeper   latest              89f7884dcc4e        3 weeks ago         148 MB
docker.io/mysql       5.6                 1f47fade220d        6 weeks ago         256 MB
【 2. 镜像备份  把镜像以文件形式保存到宿主机 】
[root@VM_0_3_centos ~]# docker  save -o /wuleinginx.tar wuleinginx
[root@VM_0_3_centos ~]# cd / && ll
total 110388
drwxr-xr-x    3 root root      4096 Oct 17 19:28 app
lrwxrwxrwx.   1 root root         7 Jun 11  2017 bin -> usr/bin
dr-xr-xr-x.   4 root root      4096 Apr 12  2018 boot
drwxr-xr-x    2 root root      4096 Apr 12  2018 data
drwxr-xr-x   19 root root      2980 Oct 18 09:41 dev
drwxr-xr-x.  91 root root     12288 Oct 18 09:41 etc
drwxr-xr-x.   2 root root      4096 Sep 29 15:19 home
-rwxr-xr-x    1 root root         4 Oct 18 09:41 idus.log
lrwxrwxrwx.   1 root root         7 Jun 11  2017 lib -> usr/lib
lrwxrwxrwx.   1 root root         9 Jun 11  2017 lib64 -> usr/lib64
drwx------.   2 root root     16384 Jun 11  2017 lost+found
drwxr-xr-x.   2 root root      4096 Nov  5  2016 media
drwxr-xr-x.   3 root root      4096 Oct 18 05:31 mnt
-rw-r--r--    1 root root       982 Oct 17 19:45 nginx.conf
drwxr-xr-x.   3 root root      4096 Jun 11  2017 opt
dr-xr-xr-x  105 root root         0 Oct 18 09:41 proc
dr-xr-x---.   9 root root      4096 Oct 18 05:31 root
drwxr-xr-x   26 root root       900 Oct 18 09:43 run
lrwxrwxrwx.   1 root root         8 Jun 11  2017 sbin -> usr/sbin
drwxr-xr-x.   2 root root      4096 Nov  5  2016 srv
dr-xr-xr-x   13 root root         0 Oct 18 09:41 sys
drwxrwxrwt.  77 root root      4096 Oct 18 09:42 tmp
drwxr-xr-x.  13 root root      4096 Jun 11  2017 usr
drwxr-xr-x.  20 root root      4096 Oct 18 09:41 var
-rwxr-xr-x    1 root root         4 Oct 18 09:41 vga.conf
-rw-r--r--    1 root root      2861 Oct  5 12:42 wget-log
-rw-------    1 root root 112824832 Oct 18 10:52 wuleinginx.tar
【 3. 镜像恢复 】
// 先把本地相关的容器和镜像删掉
[root@VM_0_3_centos /]# docker rmi wuleinginx
Untagged: wuleinginx:latest
Deleted: sha256:7856283560cbb2f04afff3a619b1ce52d212dad41b3c3aa0e4471ab7382bb674
Deleted: sha256:bae433800e271454887fd71749800b7834be47a7d0b4be5a69f643a7dcba64f1
[root@VM_0_3_centos /]# docker rm nginx
nginx
[root@VM_0_3_centos /]# docker ps -a
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS                      PORTS                    NAMES
dc92bf4f2dab        redis:latest        "docker-entrypoint..."   58 minutes ago      Exited (0) 49 minutes ago                            myredis
a8168338d283        tomcat:7-jre8       "catalina.sh run"        16 hours ago        Up About an hour            0.0.0.0:8080->8080/tcp   tomcat
750f40204378        centos:latest       "/bin/bash"              4 days ago          Exited (137) 14 hours ago                            mycentos
[root@VM_0_3_centos /]# docker images
REPOSITORY            TAG                 IMAGE ID            CREATED             SIZE
docker.io/centos      latest              75835a67d134        8 days ago          200 MB
docker.io/nginx       latest              be1f31be9a87        2 weeks ago         109 MB
docker.io/redis       latest              0a153379a539        2 weeks ago         83.4 MB
docker.io/solr        latest              45749c8baa2a        2 weeks ago         834 MB
docker.io/tomcat      7-jre8              82af61923130        3 weeks ago         463 MB
docker.io/zookeeper   latest              89f7884dcc4e        3 weeks ago         148 MB
docker.io/mysql       5.6                 1f47fade220d        6 weeks ago         256 MB
// 开始备份
root@VM_0_3_centos /]# docker load -i /wuleinginx.tar
a8f3695862a0: Loading layer [==================================================>] 11.26 kB/11.26 kB
Loaded image: wuleinginx:latest
[root@VM_0_3_centos /]# docker images
REPOSITORY            TAG                 IMAGE ID            CREATED             SIZE
wuleinginx            latest              7856283560cb        14 minutes ago      109 MB
docker.io/centos      latest              75835a67d134        8 days ago          200 MB
docker.io/nginx       latest              be1f31be9a87        2 weeks ago         109 MB
docker.io/redis       latest              0a153379a539        2 weeks ago         83.4 MB
docker.io/solr        latest              45749c8baa2a        2 weeks ago         834 MB
docker.io/tomcat      7-jre8              82af61923130        3 weeks ago         463 MB
docker.io/zookeeper   latest              89f7884dcc4e        3 weeks ago         148 MB
docker.io/mysql       5.6                 1f47fade220d        6 weeks ago         256 MB
【 4. 部署容器 】
[root@VM_0_3_centos /]# docker run -id --name=wuleinginx -p 80:80  wuleinginx:latest
14a8c8b3bf374216a3403869c4002c55b3185458a337d16ebd7b29f34c513b17
[root@VM_0_3_centos /]# docker ps -a
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS                      PORTS                    NAMES
14a8c8b3bf37        wuleinginx:latest   "nginx -g 'daemon ..."   4 seconds ago       Up 3 seconds                0.0.0.0:80->80/tcp       wuleinginx
dc92bf4f2dab        redis:latest        "docker-entrypoint..."   About an hour ago   Exited (0) 57 minutes ago                            myredis
a8168338d283        tomcat:7-jre8       "catalina.sh run"        16 hours ago        Up About an hour            0.0.0.0:8080->8080/tcp   tomcat
750f40204378        centos:latest       "/bin/bash"              4 days ago          Exited (137) 15 hours ago                            mycentos
[root@VM_0_3_centos /]#







测试：


　　　　




        

	      

	    

	  

	  

	    
      
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          原文地址：https://www.cnblogs.com/wlwl/p/9809410.html